Screw-fed machine.



. PATBNTBD 13:13.26, 1907.. o. THoMAs L G. BLAGKWBLL.

.SCREW FED MACHINE.

'iz/lbese: Y @2% JKM. 4 www No. 845,379. PATENTBD FEB. 26, 1907.

O. THOMAS & G. BLAGKWELL. l

SCREW FED MACHINE.

APPLICATION FILED 00T. 26; 1906.

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marmi) srnrns PATENT ernten.

OMER THOMAS, OF BEDFORD, AND GRANT BLAOKWELL, OF GUTHRIE, INDI- ANA,ASSIGN ORS TO INGER-SOLL-RAND COMPANY, OF NEW YORK, N. Y., A CORPORATIONOF NEW JERSEY.

SCREW-FED WIACHINE.

Patented Feb. 26, 1907.

Application filed October 26, 1906. Serial No. 340,726.

To ali 2071/0712, it may concern.-

Be it known that we, OMER THOMAS and GRANT BLAoKwELL, citizens ot .theUnited States, the former a resident of Bedford, in the county ofLawrence and State of indiana, and the latter a resident of Guthrie, inthe county of Lawrence and State of indiana, have invented new anduseful Improvements in Screw-Fed Machines, oi'which ythe following is aspecification.

This invention relates to certain improvements in screw-fed machines,and is particularly intended for use in connection with the means formounting a track-channeler cylinder on its feed-screw, so that theweight ofthe cylinder may be divided between upper and lower feed-nuts,one of the nuts being stationary and the other nut adjustable, combinedwith means for clamping the adjustable nut against movement with respectto the cylinder.

Av practical embodiment of our invention is represented in theaccompanying drawings, in which- Figure 1 represents a portion of thefeedscrew in side elevation and a portion of the cylinder and its meansfor mounting the cylinder on the screw shown in section. Fig. 2 is a topplan view of the parts shown in Fig. 1. Fig. 3 is a transverse sectiontaken in the plane of the line A A of Fig. 1 looking in the direction ofthe arrows. Figs. 4 and 5 are top plan and side views ofthe adjustableupper nut. Figs. 6 and 7 are top plan and side views of the lowerstationary nut, and Figs. 8 and 9 are side and top plan views of thejamnut.

The cylinder is denoted by 1, and it is provided with the usual lug 2,through the bore of which the feed-screw 3 extends. This lug 2 isprovided with an annular shoulder 4 in its bore.

The stationary lower nut is provided with a shank 5 and a head 6, whichforms a shoulder 7. The shank 5 ofthe lower nut extends upwardly withinthe bore of the lug 2 until its top engages the annular shoulder 4 oruntil the shoulder 7 on the head of the nut engages the bottom of thelug, as may be desired. In the present instance the cylinder is shown asbeing supported on the lower nut by the'engagement of the shank with theshoulder 4. AThis nutis held against turning by the engagement of onesideof its head with the back yof the cylinder, in the present instancethe vwith the back Vof the `c vlind er, iinfthe present instance byproviding l.the-'clamp .with ktwo lugs 13 14 in use after the lug 2 hasbeen inserted over the screw into engagement with the shoulder 7 on thelower nut. The upper nut is screwed down until its lower erd engages theshoulder 4 in the bore of the lug 2. The split clamp is then tightenedon the nut 9 by means of the bolt 11, thus locking the adjustable nutagainst movement with respect to the cylinder.

When it is desired to adjust the parts for wear, the clamp 10 may beloosened and the adjustable nut 9 screwed down to the proper point andthe clamp again tightened.

It is evident that various changes might be made in the construction,form, and arrangement of the several parts and that the device may beused in other places than in connection with a channeler-cylinder. Hencewe do not wish to limit ourselves strictly to the construction hereinset forth but What we claim is- 1. A screw, a stationary nut, anadjustable nut, a part su pported between the nuts and means for lockingthe adjustable nut against movement with respect to the said part.

2. A screw, a stationary lower nut, an adjustable upper nut, a partsupported between the nuts and means for locking the adjustable uppernut against movement with respect to the said part.

3. A screw, a stationary nut, an adjustable nut, a part supportedbetween the nuts and a split clamp embracing the adjustable nut andengaging the said part for locking the upper nut against movement withrespect to the said part.

4. A screw, a stationary lower nut, an ad- IOC justable upper nut, apart supported between the nuts and a split clamp embracing theadjustable upper nut and engaging the said part for locking theadjustable upper nut againstmovement withrespect to the said part.

5. A screw, a stationary lower nut, an adjustable upper nut and a partsupported on the lower nut and having a shoulder engaged by theadjustable upper nut.

6. A screw, a stationary lower nut, an adjustable upper nut and a partsupported, on the lower nut and having a shoulder engaged by theadjustable upper nut7 and means for locking the adjustable upper nu'flagainst movement with respect to said part.

7. A screw, a stationary lower nut, an adjustable upper nut and a partsupported on the lower nut and having a shoulder engaged by theadjustable upper nut, and a split clamp embracing the adjustable uppernut and engaging said part for locking the adjustable upper nut againstmovement with respect to the said part.

8. A screw, a stationary lower nut7 a part having a bore through whichthe screw eX- tends, said part being supported on the lower nut, anadjustable nut and an annular shoul- 'der within said bore engaged bythe adjustable upper nut.

9. A screw, a stationary lower nut, a part having a bore through whichthe screw eX- tends, said part being supported on the lower nut, anadjustable upper nut, an annular shoulder within said bore engaged bythe adjustable upper nut, and means for locking the adjustable upper nutagainst movement with respect to said part.

10. A screw, a stationary lower nut, a part having a bore through whichthe screw eX- tends, said part being supported on the lower nut, anadjustable nut, an annular shoulder within said bore engaged by theadjustable upper nut, and a split clamp embracing the adjustable uppernut and engaging the said part for locking the adjustable upper nutagainst movement with respect to said part.

In testimony that we claim the foregoing as our invention we have signedour names, in presence of two witnesses, this 9th day of October, 1906.

OMER THOMAS. GRANT BLAOKWELL. Vitnesses:

FRED BOWEN, O. W. GoBAT.

